The premise is a primer in Private Key and Certificate file formats commonly used for TLS... and a little intro to some useful OpenSSL commands for inspecting their contents, and converting between formats.

I might give some background on what Public Key Cryptography is - no more than 30 seconds - just so I don't completely lose anyone who has never done any work with Cryptography, even at arm's length.

Nevermind. I contacted Tim on Twitter to find out for myself. There will be a projector and WiFi. He's going to get back to me on Monday to let me know what kind of cable we'll need to adapt to if it's not something that comes on a MacBook.